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@article{MZ_1963__82_170171, author = {Chuan-Chih Hsiung}, title = {Curvature and homology of {Riemannian} manifolds with boundary.}, journal = {Mathematische Zeitschrift}, pages = {67--81}, publisher = {mathdoc}, volume = {82}, year = {1963}, zbl = {0119.17202}, url = {http://geodesic.mathdoc.fr/item/MZ_1963__82_170171/} }
Chuan-Chih Hsiung. Curvature and homology of Riemannian manifolds with boundary.. Mathematische Zeitschrift, Tome 82 (1963), pp. 67-81. http://geodesic.mathdoc.fr/item/MZ_1963__82_170171/